1 /* Include file for stabs debugging format support functions.
2 Copyright (C) 1986-2019 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 /* Definitions, prototypes, etc for stabs debugging format support
25 #define HASHSIZE 127 /* Size of things hashed via
28 /* Compute a small integer hash code for the given name. */
30 extern int hashname (const char *name);
32 /* Count symbols as they are processed, for error messages. */
34 extern unsigned int symnum;
36 #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
38 /* Function to invoke get the next symbol. Return the symbol name. */
40 extern const char *(*next_symbol_text_func) (struct objfile *);
42 /* Global variable which, when set, indicates that we are processing a
43 .o file compiled with gcc */
45 extern unsigned char processing_gcc_compilation;
47 /* Nonzero if within a function (so symbols should be local, if
48 nothing says specifically). */
50 extern int within_function;
52 /* Hash table of global symbols whose values are not known yet.
53 They are chained thru the SYMBOL_VALUE_CHAIN, since we don't
54 have the correct data for that slot yet.
56 The use of the LOC_BLOCK code in this chain is nonstandard--
57 it refers to a FORTRAN common block rather than the usual meaning, and
58 the such LOC_BLOCK symbols use their fields in nonstandard ways. */
60 extern struct symbol *global_sym_chain[HASHSIZE];
62 extern void common_block_start (const char *, struct objfile *);
63 extern void common_block_end (struct objfile *);
65 /* Kludge for xcoffread.c */
74 extern struct pending_stabs *global_stabs;
76 /* The type code that process_one_symbol saw on its previous invocation.
77 Used to detect pairs of N_SO symbols. */
79 extern int previous_stab_code;
81 /* Support for Sun changes to dbx symbol format. */
83 /* For each identified header file, we have a table of types defined
86 header_files maps header file names to their type tables.
87 It is a vector of n_header_files elements.
88 Each element describes one header file.
89 It contains a vector of types.
91 Sometimes it can happen that the same header file produces
92 different results when included in different places.
93 This can result from conditionals or from different
94 things done before including the file.
95 When this happens, there are multiple entries for the file in this table,
96 one entry for each distinct set of results.
97 The entries are distinguished by the INSTANCE field.
98 The INSTANCE field appears in the N_BINCL and N_EXCL symbol table and is
99 used to match header-file references to their corresponding data. */
104 /* Name of header file */
108 /* Numeric code distinguishing instances of one header file that
109 produced different results when included. It comes from the
110 N_BINCL or N_EXCL. */
114 /* Pointer to vector of types */
116 struct type **vector;
118 /* Allocated length (# elts) of that vector */
124 /* The table of header_files of this OBJFILE. */
125 #define HEADER_FILES(OBJFILE) (DBX_SYMFILE_INFO (OBJFILE)->header_files)
127 /* The actual length of HEADER_FILES. */
128 #define N_HEADER_FILES(OBJFILE) (DBX_SYMFILE_INFO (OBJFILE)->n_header_files)
130 /* The allocated lengh of HEADER_FILES. */
131 #define N_ALLOCATED_HEADER_FILES(OBJFILE) \
132 (DBX_SYMFILE_INFO (OBJFILE)->n_allocated_header_files)
134 /* Within each object file, various header files are assigned numbers.
135 A type is defined or referred to with a pair of numbers
136 (FILENUM,TYPENUM) where FILENUM is the number of the header file
137 and TYPENUM is the number within that header file.
138 TYPENUM is the index within the vector of types for that header file.
140 FILENUM == 0 is special; it refers to the main source of the object file,
141 and not to any header file. FILENUM != 1 is interpreted by looking it up
142 in the following table, which contains indices in header_files. */
144 extern int *this_object_header_files;
146 extern int n_this_object_header_files;
148 extern int n_allocated_this_object_header_files;
150 extern void cleanup_undefined_stabs_types (struct objfile *);
152 extern long read_number (char **, int);
154 extern struct symbol *define_symbol (CORE_ADDR, const char *, int, int,
157 extern void stabsread_init (void);
159 extern void stabsread_new_init (void);
161 extern void start_stabs (void);
163 extern void end_stabs (void);
165 extern void finish_global_stabs (struct objfile *objfile);
167 /* COFF files can have multiple .stab sections, if they are linked
168 using --split-by-reloc. This linked list is used to pass the
169 information into the functions in dbxread.c. */
170 struct stab_section_list
173 struct stab_section_list *next;
179 /* Functions exported by dbxread.c. These are not in stabsread.c because
180 they are only used by some stabs readers. */
182 extern struct partial_symtab *dbx_end_psymtab
183 (struct objfile *objfile, struct partial_symtab *pst,
184 const char **include_list, int num_includes,
185 int capping_symbol_offset, CORE_ADDR capping_text,
186 struct partial_symtab **dependency_list, int number_dependencies,
187 int textlow_not_set);
189 extern void process_one_symbol (int, int, CORE_ADDR, const char *,
190 const struct section_offsets *,
191 struct objfile *, enum language);
193 extern void elfstab_build_psymtabs (struct objfile *objfile,
195 file_ptr stabstroffset,
196 unsigned int stabstrsize);
198 extern void coffstab_build_psymtabs
199 (struct objfile *objfile,
200 CORE_ADDR textaddr, unsigned int textsize,
201 struct stab_section_list *stabs,
202 file_ptr stabstroffset, unsigned int stabstrsize);
204 extern void stabsect_build_psymtabs (struct objfile *objfile, char *stab_name,
205 char *stabstr_name, char *text_name);
207 extern int symbol_reference_defined (const char **);
209 extern void ref_add (int, struct symbol *, const char *, CORE_ADDR);
211 extern struct symbol *ref_search (int);
213 extern void free_header_files (void);
215 extern void init_header_files (void);
217 /* Scan through all of the global symbols defined in the object file,
218 assigning values to the debugging symbols that need to be assigned
219 to. Get these symbols from the minimal symbol table. */
221 extern void scan_file_globals (struct objfile *objfile);